I'm sort of convinced the weather is broken a little after H&H. I've been playing a few dozen hours now (with over 400 pre-H&H), and there are definitely a lot more storms. Maritime weather is weirder too. On two long voyages I've taken both times I had extended periods where the weather flipped between sunny and stormy over and over, with sunny periods lasting just 10-20 seconds and stormy periods lasting maybe a couple minutes. I was hugging coasts and its quite possible this was due to being close to biome boundaries. Still, very odd and somewhat immersion-breaking.

I'm a fan of in-game weather. I love the immersion it adds. What I'd like to see for Valheim is fewer thunderstorms/gales with high winds and huge seas, more cloudy days. cloudy days with soft rain, and misty/rainy days. Right now storms just seem too common and extended in duration and it actually gets quite annoying sometimes.